What maintains high pressure in the condenser during refrigeration?

The compressor plays a crucial role in maintaining high pressure in the condenser during refrigeration. It functions by compressing the refrigerant gas, which raises its pressure and temperature as it moves from the evaporator to the condenser. As the refrigerant gas enters the compressor at a relatively low pressure, the compression process increases its pressure significantly.

Once the high-pressure gas exits the compressor, it then flows into the condenser, where it can release heat and condense into a liquid. This process is essential for the refrigeration cycle, as it allows the refrigerant to absorb heat from the evaporator and continue circulating throughout the system.

The other components mentioned, while important for the overall refrigeration cycle, do not directly maintain the high pressure in the condenser. The expansion valve reduces the pressure of the refrigerant before it enters the evaporator, the evaporator is where the refrigerant absorbs heat, and the condenser fan helps to cool the refrigerant but does not affect the pressure maintained by the compressor.